Improved High-Efficiency Organic Solar Cells via Incorporation of a Conjugated Polyelectrolyte Interlayer
Improved High-Efficiency Organic Solar Cells via Incorporation of a Conjugated Polyelectrolyte Interlayer
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通过结合共轭聚电解质中间层改进高效有机太阳能电池
DOI：
10.1021/ja2037673
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发表时间：
2011-06-08
影响因子：
15
通讯作者：
Bazan, Guillermo C.
中科院分区：
文献类型：
--
作者：
Seo, Jung Hwa;Gutacker, Andrea;Bazan, Guillermo C.
通过在活性层和金属阴极之间引入一层共轭双金属（CPE），体异质结（BHJ）太阳能电池的功率转换效率可从5%提高到6.5%。选择聚[N-9“-十七烷基-2，7-咔唑-alt-5，5-（4”，7“-二-2-噻吩基-2”，1“，3”-苯并噻二唑）]（PCDTBT）和[6，6]-苯基C-71丁酸甲酯（PC 71 BM）作为光活性层。CPE与阳离子聚噻吩，在均聚物和嵌段共聚物的配置，用于改善电子特性。通过溶液处理的器件性能的显著改善和制造的简单性表明了用于改善具有高效率的聚合物太阳能电池的有前景和实用的途径。
The power conversion efficiencies of bulk heterojunction (BHJ) solar cells can be increased from 5 to 6.5% by incorporating an ultrathin conjugated polyelectrolyte (CPE) layer between the active layer and the metal cathode. Poly [N-9 ''-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and [6,6]-phenyl C-71 butyric acid methyl ester (PC71BM) were chosen for the photoactive layer. CPEs with cationic polythiophenes, in both homopolymer and block copolymer configurations, were used to improve the electronic characteristics. The significant improvement in device performance and the simplicity of fabrication by solution processing suggest a promising and practical pathway for improving polymer solar cells with high efficiencies.